Lippisch Delta IV
Alexander Lippisch's Delta IV was a continuation of his work on delta wing designs pioneered in his Delta I, Delta II and Delta III aircraft. The project began with an order from Gerhard Fieseler for a design that his company could build for him to fly in the 1932 Europarundflug air rally. The result was a highly unorthodox design, sporting large delta wings, canards, and an engine and propeller mounted in both the nose and tail of the plane. Fieseler built this design as the F-3 Wespe ("Wasp"), but it proved highly unstable, causing Fieseler to crash it on his first flight. Further refinements were unable to correct these deficiencies, and after one final crash, Fieseler abandoned the aircraft. Lippisch continued to believe that the problems were surmountable, and found an ally in Professor Walter Georgii of the DFS (Deutsche Forschungsanstalt für Segelflug - German Research Institute for Sailplane Flight). Georgii secured funding from the RLM (Reichsluftfahrtministerium - Reich Air Ministry) to purchase the aircraft from Fieseler and work on perfecting it. At the DFS, Lippisch rebuilt the aircraft, removing the canards and the rear engine and renaming it the Delta IVa. Although this flew much better than its predecessor, it was still involved in a very serious crash which led to an investigation of Lippisch's endeavours. The RLM and the DVL (Deutsche Versuchsanstalt für Luftfahrt - German Aviation Research Institute) eventually concluded that the Delta series was not only dangerous, but an aeronautical dead end. Only Georgii's continued support prevented them from ordering the discontinuation of the research.
This is a companion discussion topic for the original entry at https://ww2incolor.com/gallery/german-air-force/46010/lippisch-delta-iv